import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from './../components/Login.vue'
import Home from './../components/Home.vue'
import Welcome from './../components/Welcome.vue'
import Users from './../components/user/Users.vue'
import Rights from './../components/power/Rights.vue'
import Roles from './../components/power/Roles.vue'
import Cate from './../components/goods/Cate.vue'
import Params from './../components/goods/Params'

Vue.use(VueRouter)

const routes = [
  {
    path: '/',
    redirect: 'login'
  },
  {
    path: '/login',
    name: 'login',
    component: Login
  },
  {
    path: '/home',
    component: Home,
    name: 'home',
    redirect: '/welcome',
    children: [
      {
        path: '/welcome',
        component: Welcome
      },
      {
        path: '/users',
        component: Users,
        name: 'users'
      },
      {
        path: '/rights',
        name: 'rights',
        component: Rights
      }, {
        path: '/roles',
        name: 'roles',
        component: Roles
      },{
        path: '/categories',
        name: 'categories',
        component: Cate
      },{
        path: '/params',
        name: 'params',
        component: Params
      },
    ]
  },

]

const router = new VueRouter({
  routes
})
//路由导航守卫
router.beforeEach((to, from, next) => {
  //to 将要访问的路径
  // from 代表从哪个路径条状过来的
  // next 是一个函数，默认表示放行
  // next（） 放行  next('/login') 强制跳转

  if (to.path === '/login') return next()
  const tokenStr = window.sessionStorage.getItem('token')
  if (!tokenStr) return next('/login')
  next()
})

export default router
